| Official Name: | Huai Sai |
| Native Name: | ห้วยทราย |
| Settlement Type: | Tambon |
| Subdivision Type: | Country |
| Subdivision Type2: | Province |
| Subdivision Name2: | Chiang Mai |
| Subdivision Type3: | Amphoe |
| Subdivision Name3: | Mae Rim |
| Population As Of: | 2020 |
| Population Total: | 4,789 |
| Timezone: | TST |
| Utc Offset: | +7 |
| Latns: | N |
| Longew: | E |
| Postal Code Type: | Postal code |
| Blank Name: | TIS 1099 |
Huai Sai (Thai: ห้วยทราย) is a tambon (subdistrict) of Mae Rim District, in Chiang Mai Province, Thailand. In 2020, it had a total population of 4,789 people.[1]
The tambon is subdivided into 5 administrative villages (muban).
| No. | Name | Thai | |
|---|---|---|---|
| 1. | Ban Oi | บ้านอ้อย | |
| 2. | Ban Nong Pla Man | บ้านหนองปลามัน | |
| 3. | Ban Huai Sai | บ้านห้วยทราย | |
| 4. | Ban Mae Aen | บ้านแม่แอน | |
| 5. | Ban Hua Fai | บ้านหัวฝาย |
The whole area of the subdistrict is covered by the subdistrict administrative organization (SAO) Huai Sai (องค์การบริหารส่วนตำบลห้วยทราย).